RideFixerAventon error code
Aventon error E21: Current error
Medium severity Service soon
Can I ride home with this error?
Ride with caution. Aventon advises not riding until the code clears; you can walk or pedal gently home without assist.
What it means
The motor current exceeded the controller's limits, so the controller shut off to protect itself. It can happen on long climbs with maximum pedal assist.
Likely causes
- Long steep climbs on top assist
- Dirty, damaged or loose motor/controller cables
Symptoms
- E21 on the display
- Assist cuts out
How to fix it
- Stop and let the bike cool for about 2 minutes, then turn it back on.
- If you were not climbing, check the motor and controller cables are clean, undamaged and fully connected.
- If the code stays, contact Aventon support.
How urgent is it?
Resolve before your next assisted ride.
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